A twin-screw extruder exhaust gas vacuum device

Abstract

The utility model relates to a vacuumizing device technical field, and disclose a kind of double-screw extruder exhaust vacuumizing device, comprising: machine body and extrusion end, extrusion end is set to the upper end of machine body, the top of extrusion end is provided with cooling mechanism, the outside of extrusion end is connected with suction pipe body, cooling mechanism includes circulating cooling equipment, the top of circulating cooling equipment is connected with air pump, the exhaust port of air pump is connected with second pipe fitting, the drain port of circulating cooling equipment is connected with first pipe fitting, first pipe fitting is connected with second pipe fitting, and the other end of first pipe fitting is connected with the water inlet end of circulating cooling equipment, the inner chamber of first pipe fitting is slidably connected with third pipe fitting. The double-screw extruder exhaust vacuumizing device can reduce the temperature difference between the device and the suction pipe body, avoid the normal discharge of internal air due to the large temperature difference and large pressure, thereby ensuring the smoothness of exhaust extraction and improving the overall operation effect of the device.

Description

Technical Field

[0001] This utility model relates to the field of vacuum device technology, specifically a vacuum device for exhaust gas from a twin-screw extruder. Background Technology

[0002] Twin-screw extruders often require a waste gas vacuum device during the processing of materials such as plastics and rubber to handle the waste gas generated during processing and ensure stable operation of the equipment.

[0003] In the prior art, when the vacuuming device of the existing twin-screw extruder is in use, the connection between the vacuuming device and the twin-screw extruder results in a small temperature difference between the connection point and the inside of the twin-screw extruder, which in turn leads to a small pressure difference between the two, resulting in low vacuuming efficiency of the vacuuming device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a vacuum pumping device for exhaust gas from a twin-screw extruder, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum device for exhaust gas from a twin-screw extruder, comprising: a machine body and an extrusion end, wherein the extrusion end is disposed at the upper end of the machine body, a cooling mechanism is disposed at the top of the extrusion end, and an exhaust pipe is connected to the outside of the extrusion end.

[0006] The cooling mechanism includes a circulating cooling device. An air pump is connected to the top of the circulating cooling device. The exhaust port of the air pump is connected to a second pipe. The drain port of the circulating cooling device is connected to a first pipe. The first pipe is connected to the second pipe, and the other end of the first pipe is connected to the water inlet of the circulating cooling device. A third pipe is slidably connected to the inner cavity of the first pipe. A baffle is evenly arranged on the upper end of the third pipe. The two ends of the third pipe are respectively connected to the water inlet and the water outlet of the circulating cooling device. A vacuum machine is installed on the outside of the air extraction pipe.

[0007] The circulating cooling equipment circulates the cooling medium through the first and third pipe fittings. The air pump can assist in adjusting the pressure inside the pipe fittings to ensure stable flow of the cooling medium. The third pipe fitting slides inside the first pipe fitting, which can flexibly adjust the cooling coverage area. The baffle can disrupt the flow state of the cooling medium and improve the heat exchange efficiency with the extrusion end.

[0008] The vacuum machine creates a vacuum at the extrusion end through the suction pipe, quickly expelling the waste gas generated during processing. The cooling mechanism effectively controls the temperature at the extrusion end, reducing the temperature difference between it and the suction pipe, thereby preventing a large pressure value from being generated between them, which would prevent the internal air from being properly discharged.

[0009] Preferably, the feed inlet of the extrusion end is connected to a hopper, and a control module is provided at the upper end of the machine body. The hopper continuously supplies raw materials to the extrusion end. The control module can integrate the functions of regulating the extrusion speed, the operating parameters of the cooling mechanism, the power of the vacuum machine, etc. The hopper ensures the continuity of raw material supply and reduces downtime for feeding. The control module realizes automated operation, improves production accuracy and efficiency, and reduces human operation errors.

[0010] Preferably, the bottom of the circulating cooling equipment is provided with a base, which is connected to the extrusion end by reinforcing ribs. The base provides an installation foundation for the circulating cooling equipment, and the reinforcing ribs rigidly connect the base to the extrusion end. This enhances the installation stability of the circulating cooling equipment, prevents displacement or abnormal noise due to vibration during operation, and extends the service life of the equipment.

[0011] Preferably, the bottom of the inner cavity of the first pipe fitting is provided with a track groove, and a track block is slidably connected inside the track groove. The track block is connected to the third pipe fitting. The track block slides within the track groove, providing guidance for the displacement of the third pipe fitting. This ensures that the sliding process of the third pipe fitting is smooth and does not deviate, improves the accuracy of cooling position adjustment, and reduces frictional loss during sliding.

[0012] Preferably, both ends of the third pipe fitting are connected to corrugated hoses, which are connected to the circulating cooling equipment. The corrugated hoses are expandable and flexible, adapting to changes in position as the third pipe fitting slides, while maintaining the seal of the cooling medium passage. This prevents damage to the connection between the third pipe fitting and the circulating cooling equipment due to pulling during sliding, ensuring the continuity and seal of the cooling medium circulation.

[0013] Preferably, the inner cavity of the circulating cooling equipment includes a cooling water tank, with pumps installed at both ends of the inner cavity of the cooling water tank. The two pumps are respectively connected to both ends of the third pipe fitting. The cooling water tank stores the cooling medium, and the two pumps drive the cooling medium to flow from the cooling water tank into the third pipe fitting and back from the third pipe fitting to the cooling water tank, forming a closed loop. The pumps provide power to ensure a stable circulation speed of the cooling medium, continuously and efficiently removing heat from the extrusion end, maintaining the extrusion end temperature within a suitable range, and ensuring stable material processing performance.

[0014] Compared with the prior art, this utility model provides a vacuum pumping device for exhaust gas from a twin-screw extruder, which has the following beneficial effects:

[0015] This twin-screw extruder exhaust gas vacuum device utilizes a cooling mechanism that employs a circulating cooling system, along with a first and third pipe assembly, to achieve the circulation of the cooling medium. An air pump assists in regulating the pressure within the pipe assembly, helping to ensure the stability of the cooling medium flow and guaranteeing a continuous and reliable cooling process. The sliding arrangement of the third pipe assembly within the first assembly allows for flexible adjustment of the cooling coverage area to adapt to different cooling requirements. A baffle plate disrupts the flow of the cooling medium, improving its heat exchange efficiency with the extrusion end and enhancing the cooling effect. Simultaneously, the vacuum unit creates a vacuum at the extrusion end through the extraction pipe, rapidly expelling exhaust gases generated during processing. The effective temperature control of the extrusion end by the cooling mechanism reduces the temperature difference between it and the extraction pipe, preventing excessive pressure buildup due to a large temperature difference that could hinder the normal exhaust of internal air. This ensures smooth exhaust gas extraction and improves the overall operational efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a front view of the present utility model;

[0017] Figure 2 This is a schematic diagram of the external cooling mechanism of this utility model;

[0018] Figure 3 This is a partial sectional view of the first pipe fitting of this utility model.

[0019] In the diagram: 1. Machine body; 2. Extrusion end; 21. Hopper; 22. Control module; 3. Cooling mechanism; 31. Circulating cooling equipment; 32. First pipe fitting; 33. Air pump; 34. Second pipe fitting; 35. Third pipe fitting; 36. Baffle plate; 37. Base; 4. Air extraction pipe body; 41. Vacuum machine. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution, please refer to Figure 1 , Figure 2 and Figure 3 A vacuum device for exhaust gas from a twin-screw extruder includes: a machine body 1 and an extrusion end 2. The extrusion end 2 is located at the upper end of the machine body 1, and a cooling mechanism 3 is provided on the top of the extrusion end 2. An exhaust pipe 4 is connected to the outside of the extrusion end 2.

[0022] The cooling mechanism 3 includes a circulating cooling device 31. An air pump 33 is connected to the top of the circulating cooling device 31. The exhaust port of the air pump 33 is connected to a second pipe 34. The drain port of the circulating cooling device 31 is connected to a first pipe 32. The first pipe 32 is connected to the second pipe 34, and the other end of the first pipe 32 is connected to the water inlet of the circulating cooling device 31. A third pipe 35 is slidably connected to the inner cavity of the first pipe 32. A baffle plate 36 is evenly arranged on the upper end of the third pipe 35. The two ends of the third pipe 35 are connected to the water inlet and the water outlet of the circulating cooling device 31, respectively. A vacuum machine 41 is provided on the outside of the air extraction pipe body 4.

[0023] The circulating cooling device 31 circulates the cooling medium through the first pipe 32 and the third pipe 35. The air pump 33 can assist in adjusting the pressure inside the pipe to ensure stable flow of the cooling medium. The third pipe 35 slides inside the first pipe 32, which can flexibly adjust the cooling coverage area. The baffle 36 can disrupt the flow state of the cooling medium and improve the heat exchange efficiency with the extrusion end 2.

[0024] The vacuum machine 41 evacuates the extrusion end 2 through the suction pipe 4 to quickly discharge the waste gas generated during processing. The cooling mechanism 3 can effectively control the temperature of the extrusion end 2 and reduce the temperature difference between it and the suction pipe 4, thereby avoiding the generation of a large pressure value between it and the suction pipe 4, which would prevent the internal air from being discharged normally.

[0025] The feed inlet of the extrusion end 2 is connected to the hopper 21. The upper end of the machine body 1 is equipped with a control module 22. The hopper 21 continuously supplies raw materials to the extrusion end 2. The control module 22 can integrate the functions of regulating the extrusion speed, the operating parameters of the cooling mechanism 3, and the power of the vacuum machine 41. The hopper 21 ensures the continuity of raw material supply and reduces downtime for feeding. The control module 22 realizes automated operation, improves production accuracy and efficiency, and reduces human operation errors.

[0026] The bottom of the circulating cooling device 31 is provided with a base 37, which is connected to the extrusion end 2 by reinforcing ribs. The base 37 provides an installation foundation for the circulating cooling device 31, and the reinforcing ribs rigidly connect the base 37 to the extrusion end 2. This enhances the installation stability of the circulating cooling device 31, prevents displacement or abnormal noise caused by vibration during operation, and extends the service life of the equipment.

[0027] The bottom of the inner cavity of the first pipe fitting 32 is provided with a track groove, and a track block is slidably connected inside the track groove. The track block is connected to the third pipe fitting 35. The track block slides in the track groove, providing guidance for the displacement of the third pipe fitting 35. This ensures that the sliding process of the third pipe fitting 35 is smooth and does not deviate, improves the accuracy of cooling position adjustment, and reduces frictional loss during sliding.

[0028] Both ends of the third fitting 35 are connected to corrugated hoses, which are connected to the circulating cooling device 31. The corrugated hoses are flexible and adaptable, accommodating changes in position as the third fitting 35 slides, while maintaining the seal of the cooling medium passage. This prevents damage to the connection between the third fitting 35 and the circulating cooling device 31 due to pulling when the third fitting 35 slides, ensuring the continuity and seal of the cooling medium circulation.

[0029] The inner cavity of the circulating cooling device 31 includes a cooling water tank. Pumps are installed at both ends of the inner cavity of the cooling water tank, and each pump is connected to one end of the third pipe fitting 35. The cooling water tank stores the cooling medium. The two pumps drive the cooling medium to flow from the cooling water tank into the third pipe fitting 35 and back from the third pipe fitting 35 to the cooling water tank, forming a closed loop. Power provided by the pumps ensures a stable circulation speed of the cooling medium, continuously and efficiently removing heat from the extrusion end 2, maintaining the temperature of the extrusion end 2 within a suitable range, and ensuring stable material processing performance.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum pumping device for exhaust gas from a twin-screw extruder, comprising: The machine body (1) and the extrusion end (2) are located at the upper end of the machine body (1). The machine body (1) is characterized in that: a cooling mechanism (3) is provided at the top of the extrusion end (2), and an air extraction pipe (4) is connected to the outside of the extrusion end (2). The cooling mechanism (3) includes a circulating cooling device (31), the top of which is connected to an air pump (33), the exhaust port of which is connected to a second pipe (34), the drain port of which is connected to a first pipe (32), the first pipe (32) and the second pipe (34) are connected, and the other end of the first pipe (32) is connected to the water inlet of the circulating cooling device (31). The inner cavity of the first pipe (32) is slidably connected to a third pipe (35), the upper end of which is uniformly provided with a baffle plate (36), and the two ends of which are connected to the water inlet and the water outlet of the circulating cooling device (31) respectively. A vacuum machine (41) is provided on the outside of the air extraction pipe (4).

2. The exhaust gas vacuum device for a twin-screw extruder according to claim 1, characterized in that: The feed inlet of the extrusion end (2) is connected to the material hopper (21), and a control module (22) is provided at the upper end of the machine body (1).

3. The exhaust gas vacuum device for a twin-screw extruder according to claim 1, characterized in that: The bottom of the circulating cooling device (31) is provided with a base (37), which is connected to the extrusion end (2) by reinforcing ribs.

4. The exhaust gas vacuum device for a twin-screw extruder according to claim 1, characterized in that: The bottom of the inner cavity of the first pipe fitting (32) is provided with a track groove, and a track block is slidably connected inside the track groove. The track block is connected to the third pipe fitting (35).

5. The exhaust gas vacuum device for a twin-screw extruder according to claim 1, characterized in that: Both ends of the third pipe fitting (35) are connected to corrugated hoses, which are connected to the circulating cooling equipment (31).

6. The exhaust gas vacuum device for a twin-screw extruder according to claim 1, characterized in that: The inner cavity of the circulating cooling device (31) includes a cooling water tank, and pump bodies are provided at both ends of the inner cavity of the cooling water tank. The two pump bodies are respectively connected to the two ends of the third pipe fitting (35).

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